I see two or three possible connections in these videos. Care to speculate on what is causing this?
The connections take place between the 0:45 and 0:50 marks.
Two or three electrical connections can be seen between the 5:20 and 5:31 marks.
This is another video that shows a meteor-to-ground connection. The fireworks start at 4:35. The area begins to brighten, then at 4:37 it starts to darken, then at 4:38 it starts to brighten again a whole lot. Later, still at 4:38, it starts to darken again. At 4:39 it starts to brighten again tremendously. Later, still at 4:39, there is a meteor-to-ground connection with a (z-?) pinch. This connection continues to expand, taking up nearly half the sky line, until at 4:40 the other end of the connection finally comes into view. The connection tube begins to narrow until at 4:40 the connection is broken and the area begins to darken again. By 4:41 the whole area is quite dark. Then, still at 4:41 there is a slight brightening which continues into 4:42 and then it starts to grow dimmer again. The whole area becomes dark again except immediately around the meteor (still at 4:42.) The area remains dark while the meteor glow is reduced to mere embers. An 4:43 the area begins to become bright again as the glowing embers fly on until they are extinguished and the area is again illuminated by the Sun. To follow this play-by-play, you’ll need to quickly pause the video at each frame.
At 0:09 the Sun is fully out-shined and the meteor is above the street, then the bolide brightens, then dims, them brightens again. Then at 0:10 Kazaam! A meteor-to-ground connection. I won’t give a play-by-play on this. Just pause the video to see the individual frames. The three screen captures that follow the video show that light builds from the ground and then shoots upward towards the meteor while light builds around the meteor and then shoots downward towards the ground, until the two connect, forming a pinched column.
So there you have it. FOUR videos showing a meteor-to-ground connection.
To me, these columns are reminiscent of a current of electricity, a plasma discharge. The pinched form in particular (the z-pinch) is a dead giveaway. Is there a more conventional explanation for this?